MF
Mary Flynn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this Mary Flynn across the 1920, 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1874), then head of a 3-person household.
Age 66
b. ~1874
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Flynn |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Belleville |
| 1935 Residence (County) | Essex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Belleville |
| Est. Birth Year | ~1874 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Flynn | Daughter | — | 37 | ~1903 |
| Michael Flynn | Head | — | 68 | ~1872 |
| Mary Flynn | Spouse | — | 66 | ~1874 |
Census Appearances
1920
New York, …
Other, age 45
New York, New York · implied b. ~1875 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | Margaret |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1877 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Housework |
| Industry | Private Family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1895 |
| Birthplace (normalized) | ireland |
1930
Essex, New …
Other, age 55
Essex, New Jersey · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | Margaret |
| Relationship to Head | Aunt |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Single |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Essex-County, New …
Spouse, age 66
Essex-County, New Jersey · implied b. ~1874 — 3 household members
| Surname | Flynn |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Belleville |
| 1935 Residence (County) | Essex |
| Naturalization Status | Naturalized |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Flynn across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Flynn
Spouse · 1940 · age 66 · b. ~1874 · New Jersey
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Essex-County, New Jersey
Open full size
1940 US Federal Census — Essex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02328-00241)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary O Di Ruggiero | 31 | Daughter | — | New Jersey |
| 42 | James Jr Di Ruggiero | 11 | Grandson | — | New Jersey |
| 43 | Marie Di Ruggiero | 8 | Granddaughter | — | New Jersey |
| 44 | Angela Di Ruggiero | 2 | Granddaughter | — | New Jersey |
| 45 | Harry P Gemmill | 47 | Head | Tool Maker | Pennsylvania |
| 46 | Viola H Gemmill | 42 | Wife | — | New Jersey |
| 47 | Paul Gemmill | 18 | Son | — | New Jersey |
| 48 | Arthur Mccaskey | 34 | Head | Chauffeur | New Jersey |
| 49 | Estelle Mccaskey | 25 | Wife | — | New Jersey |
| 50 | Betty Anne Mccaskey | 1 | Daughter | — | New Jersey |
| 51 | Charles Vache | 26 | Head | Salesman Route | Virginia |
| 52 | Elsie Vache | 27 | Wife | Salesgirl | Maine |
| 53 | Josephine Schenck | 62 | Head | Practical Nurse | New Jersey |
| 54 | Mary Louise Schenck | 44 | Daughter | Practical Nurse | New Jersey |
| 55 | Emma Underwood | 50 | Boarder | — | Newfoundland |
| 56 | Minola Webb | 49 | Boarder | — | Ohio |
| 57 | Joseph Wildey | 65 | Boarder | Night Watchman | Massachusetts |
| 58 | Clifford Fish | 45 | Head | Handbag | New Jersey |
| 59 | Eva O Fish | 44 | Wife | — | New York |
| 60 | Grace M Fish | 52 | Sister | Wire Weaver | New Jersey |
| 61 | Ida M Kane | 66 | Boarder | Hat Trimmer | Pennsylvania |
| 62 | Joseph Costello | 49 | Head | Shipping Room Foreman | Connecticut |
| 63 | Sarah Costello | 47 | Wife | — | New Jersey |
| 64 | Elizabeth Bailey | 71 | Mother-in-law | — | New Jersey |
| 65 | Michael Flynn | 68 | Head | — | New Jersey |
| 66 | Mary A Flynn THIS PERSON | 66 | Wife | — | Ireland |
| 67 | Margaret Flynn | 37 | Daughter | — | New Jersey |
| 68 | Franklyn Waters | 35 | Head | Collector | Australia |
| 69 | Helen B Waters | 35 | Wife | — | New Jersey |
| 70 | Robert T Waters | 8 | Son | — | New Jersey |
| 71 | Margaret Connelly | 58 | Head | Assembler | New York |
| 72 | Arvid W Connelly | 30 | Son | Stock Clerk | New Jersey |
| 73 | Charles Connelly | 23 | Son | Stock Clerk | New Jersey |
| 74 | William Sincox | 54 | Head | Blacksmith | New Jersey |
| 75 | Mary Sincox | 48 | Wife | — | New Jersey |
| 76 | Andrew Sheldrick | 28 | Son-in-law | Order Checker | New Jersey |
| 77 | Helen Sheldrick | 23 | Daughter | Mounter | New Jersey |
| 78 | Martin O'Brien | 23 | Son-in-law | Laborer | Pennsylvania |
| 79 | Evelyn O'Brien | 19 | Daughter | — | New Jersey |
| 80 | George Sincox | 17 | Son | Service Repair Man | New Jersey |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)